bisecting fixing commit since 84f5ad468100f86d70096799e4ee716a17c2962f
building syzkaller on ddc3e85997efdad885e208db6a98bca86e5dd52f
testing commit 84f5ad468100f86d70096799e4ee716a17c2962f
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: cd97ebced1d3c38452d15db11be740e760b6811f843c5e142329c232bf23f118
all runs: crashed: general protection fault in hsr_check_carrier_and_operstate
testing current HEAD 66722c42ec916e92cadda46316f8f6e3fdcaedc6
testing commit 66722c42ec916e92cadda46316f8f6e3fdcaedc6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c39ccad23e47ffd691d4290f6587b246bc65d66d556a7a9a5d9d0254d2970e4f
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m49.295873488s (build: 19m11.028142619s, test: 6m38.82495776s)
the crash still happens on HEAD
commit msg: Linux 4.14.256
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1